Data encryption protects sensitive information during transmission by converting it into a coded format that is unreadable to unauthorized users. This process utilizes cryptographic algorithms, ensuring that even if data is intercepted, it remains secure. Encryption plays a central role in safeguarding personal data, financial transactions, and confidential communications, reinforcing privacy and compliance with regulations like GDPR. It is essential for protecting data integrity, preventing unauthorized access, and maintaining trust in digital transactions. Implementing strong encryption protocols is vital to securing data in transit across networks.